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SN74CB3Q3253PW

Name: SN74CB3Q3253PW
Rating: 4.7 (12 reviews)

IC MUX/DEMUX 2 X 4:1 16TSSOP

製造商
製造商。部分 #SN74CB3Q3253PW
包 16-TSSOP (0.173, 4.40mm Width)
資料表 SN74CB3Q3253PW DataSheet
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規格

Supplier	Rochester Electronics, LLC,Texas Instruments
Package	Bulk,Tube
Series	74CB
ProductStatus	Active
Type	Multiplexer/Demultiplexer
Circuit	2 x 4:1
IndependentCircuits	1
VoltageSupplySource	Single Supply
Voltage-Supply	2.3V ~ 3.6V
OperatingTemperature	-40°C ~ 85°C
MountingType	Surface Mount
Package/Case	16-TSSOP (0.173, 4.40mm Width)

概述

Description

The SN74CB3Q3253PW is an 8-bit bidirectional bus transceiver/level shifter from TI’s CB3Q family. It provides two 8-bit I/O banks (A and B) with tri-state outputs, controlled by a direction input (DIR) and an output-enable input (OE). When enabled, data can pass between the A and B sides in either direction depending on DIR, enabling bidirectional data transfer and voltage-domain bridging between two supplies (VCCA on side A and VCCB on side B). It’s designed for mixed-voltage interfaces and for sharing buses between devices with different logic levels. Typical uses include microcontroller-to-peripheral interfaces, memory/bus bridging, and other applications requiring reversible data transfer across voltage domains. The PW suffix indicates a specific package (commonly a 20-pin small-outline/TSSOP-style package) suitable for compact board designs.

Features

Here are the typical features of TI SN74CB3Q3253PW:
- Three bidirectional, three-channel pass-gate bus switches (A↔B) with a common direction control
- Single overall output-enable (OE): when OE is low, data passes; when OE is high, all channels are high-impedance
- Direction control via DIR input determines which direction data flows
- CMOS, low on-resistance pass gates for high-speed operation
- Wide operating voltage range (VCC) suitable for TTL/CMOS logic and potential level shifting between buses
- ESD protection on all I/O pins
- Package: PW (16-pin small-outline) for compact designs
- Applications: bus expansion/interconnects, data buffering, backplanes, and level-shift interconnections
Note: Always verify exact electrical specs (Vcc range, RON, data rate) from the TI datasheet for your specific operating conditions.

Package

PW denotes TI’s Plastic Small Outline Package (SOP) – a surface-mount, gull-wing package.

Pinout

- Pin count: 20 pins (PW package)
- Function: Dual 3-state buffer/drive (bus switch) device used to pass or isolate two data buses with tri-state outputs (enable-controlled).

Manufacturer

- Manufacturer: Texas Instruments (TI).
- What kind of company: An American multinational semiconductor company that designs and manufactures integrated circuits, specializing in analog, mixed-signal, and digital ICs and embedded processing devices.

Application

- Bidirectional tri-state bus switching between two buses
- Voltage-domain level shifting (different Vccs)
- Data/address bus routing and multiplexing in microprocessor/memory systems
- I/O expansion and backplane/interconnect interfaces
- Test, debug, and hot-swap signal routing in complex boards
Note: Refer to the datasheet for exact voltage ranges and operation.

Equivalent

Pin-compatible equivalents are typically NXP’s 74CB3Q3253. Other manufacturers may offer functionally similar CB-series bus switches; for exact package and speed, check a distributor cross-reference (Digi‑Key, Mouser, etc.).